diff --git a/src/corelib/text/qstringbuilder.h b/src/corelib/text/qstringbuilder.h
index 53f8865edf1..291988697fb 100644
--- a/src/corelib/text/qstringbuilder.h
+++ b/src/corelib/text/qstringbuilder.h
@@ -1,6 +1,8 @@
 // Copyright (C) 2020 The Qt Company Ltd.
 // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
+#include <QtCore/qstring.h>
+
 #ifndef QSTRINGBUILDER_H
 #define QSTRINGBUILDER_H
 
@@ -11,7 +13,6 @@
 #pragma qt_sync_stop_processing
 #endif
 
-#include <QtCore/qstring.h>
 #include <QtCore/qbytearray.h>
 
 #include <string.h>